46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* \brief Kernel backend for execution contexts in userland
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* \author Adrian-Ken Rueegsegger
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* \author Reto Buerki
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* \date 2015-04-28
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*/
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/*
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* Copyright (C) 2015-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* core includes */
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#include <kernel/cpu.h>
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#include <kernel/thread.h>
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#include <pic.h>
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using namespace Kernel;
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void Thread::exception(Cpu & cpu)
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{
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switch (regs->trapno) {
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case Cpu::Context::PAGE_FAULT:
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_mmu_exception();
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return;
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case Cpu::Context::UNDEFINED_INSTRUCTION:
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Genode::raw(*this, ": undefined instruction at ip=", (void*)regs->ip);
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_die();
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return;
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case Cpu::Context::SUPERVISOR_CALL:
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_call();
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return;
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}
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if (regs->trapno >= Cpu::Context::INTERRUPTS_START &&
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regs->trapno <= Cpu::Context::INTERRUPTS_END) {
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pic().irq_occurred(regs->trapno);
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_interrupt(cpu.id());
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return;
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}
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Genode::raw(*this, ": triggered unknown exception ", regs->trapno,
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" with error code ", regs->errcode, " at ip=", (void*)regs->ip);
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_die();
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}
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